I am waiting for those rolls to be half off or not on sale so I can use a coupon, and then I will get a roll like that, too. I have 9 quilt tops here waiting for batting. (I am horrible about that.) I think they usually do batting half off for the 4th of July sale, but am not certain.
The next smaller quilt you do- a baby one is perfect- get a package of the bamboo and try it out. Maybe it's 30% off now at Joanns? Or use a coupon. I bet you will love it!